Dust and dirt separation assembly

摘要

A dust and dirt separation assembly (10) for use in a vacuum cleaner, includes a dirty air inlet (12) and a clean air outlet (13) with an airflow path passing firstly through a cyclonic separator (11) for separating larger particles of dirt from the dirty air and secondly through a filtration element (20) for separating smaller particles of dust from the dirty air, a dirt collection chamber (16) to receive dirt from the cyclonic separator and dust from the filter element, and a striker mechanism (30) including a striker member (31) which is operable to strike the filter element to dislodge the dust from the filter element so that the dust enters the collection chamber with the larger particles of dirt. The striker member may be operated in response to cessation of air-flow within a section (32-35) of the air-flow path or by a mechanical actuator.